Open Access

Quantization Noise Shaping on Arbitrary Frame Expansions

EURASIP Journal on Advances in Signal Processing20062006:053807

https://doi.org/10.1155/ASP/2006/53807

Received: 2 October 2004

Accepted: 12 July 2005

Published: 23 March 2006

Abstract

Quantization noise shaping is commonly used in oversampled A/D and D/A converters with uniform sampling. This paper considers quantization noise shaping for arbitrary finite frame expansions based on generalizing the view of first-order classical oversampled noise shaping as a compensation of the quantization error through projections. Two levels of generalization are developed, one a special case of the other, and two different cost models are proposed to evaluate the quantizer structures. Within our framework, the synthesis frame vectors are assumed given, and the computational complexity is in the initial determination of frame vector ordering, carried out off-line as part of the quantizer design. We consider the extension of the results to infinite shift-invariant frames and consider in particular filtering and oversampled filter banks.

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Authors’ Affiliations

(1)
Digital Signal Processing Group, Massachusetts Institute of Technology

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Copyright

© Boufounos and Oppenheim 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.